How to view selected items of an assembly only for modifying their mates?

I've been told there is a solidworks feature which makes working with large assemblies a lot easier, by allowing focus on specific regions or something like that. I was just curious and wanted to know if anyone knew of any similar features?

Select the required component, right click and select ISOLATE. This would make the other unselected components hidden and you can easily work on the selected component. Once you're done, click "Exit Isolate" to get back all of them. You may also save this as a display state in case you need to working on them again and again (as this would save you selecting the components).